(a) A primary monument must consist of a minimum one-and-one-half-inch diameter metal pipe at least 30 inches long with a minimum four-inch flange at the bottom. A minimum two-inch diameter metal cap must be permanently attached to the top. If both the cap and the pipe are of nonferrous metal, then additives with magnetic qualities must be permanently attached at both the top and bottom of the monument. Every primary monument cap must be permanently stamped with the year set, the surveyor’s registration number, and the property corner identification.

(b) If it is impractical to set the primary monument as specified in subsection (a) of this section, one of the following may be substituted:

(c) Every subdivision must have a minimum of two primary monuments set or recovered on the boundary of the subdivision. All angle points along the subdivision boundary may not be situated more than 1,320 feet apart. If the point for a primary monument is in a place that would be impractical to monument, a witness corner must be set. Witness corners must always be set on a survey property line at a distance considered reasonable and practical from the true corner point. Witness corners must comply with the standards for primary monuments.

(d) Secondary monuments shall be used for property line curvature control, at interior angle points, on interior lines that exceed 1,320 feet in length and are not monumented with primary monuments, and for all other corners that are part of the subdivision. Secondary monuments must be four feet long with a one-and-one-half-inch cap attached at the top with the surveyor’s registration number and corner identification stamped on the top.

(e) All primary monuments shall be referenced to two bearing objects, such as rocks, buildings, etc., or have two reference monuments set marking the corner. [Code 1979 § 16.02.060.]